/*设置通用样式********************************************************************/
p,h1,h2,h3,h4,h5,h6,ul,ol,dl,dd{
    margin:0;
    padding:0;
    list-style:none;
}
a{
    text-decoration:none;
}
img{
    vertical-align:middle;
    /*图片轮播时候不溢出的效果*/
}
.clear:after{
    content:"";
    display:block;
    clear:both;
}
#header{
    width:100%;
    height:110px;
    margin-bottom:-50px;
}
/*中间大图轮播************************************************************************************/
#banner{
    width:1197px;
    height:535px;
    overflow:hidden;
    position:relative;
    margin-left: 90px;
    background-color: #f3f3f3;
}
#banner ul.banner-img{
    position:absolute; left:0;
}
#banner ul.banner-img>li{float:left;width:1197px;}
#banner ul.banner-img img{
    width:1197px;
    height:535px;
}
#banner a.ck-slide{
    position:absolute;
    top:257px;
    width:35px;
    height:70px;
    border-radius:3px;
    background:#000;
    opacity:0.4;
    transition:all .3s linear;
}
#banner a.ck-left{
    left:5px;
    background: #000 url(../../images/index/arrow-left.png) no-repeat center center;
}
#banner a.ck-right{
    right:5px;
    background:#000 url(../../images/index/arrow-right.png) no-repeat center center;
}
#banner a.ck-slide:hover{
    opacity:0.9;
}
#banner ul.indicators{
    position:absolute;
    bottom:10px;
    left:50%;
    margin-left:-50px;
}
#banner ul.indicators li{
    width:12px;
    height:12px;
    background:#fff;
    border-radius:50%;
    float:left;
    margin-right:5px;
    transition:all .2s linear;
}
#banner ul.indicators li:hover,#banner ul.indicators li.hover{
    cursor:pointer;
    background-color:#0AA1ED;
}
/*about的CSS*************************************************************************/
.middle_about{
    margin-top: 79px;
}
.about>h3:first-child{
    font-size: 2em;
    color: #424242;
    font-weight: 700;
    margin: 0;
    box-sizing: border-box;
    text-align: center;
}
.about>p:nth-child(2){
    width: 65%;
    font-size: 1em;
    line-height: 1.8em;
    color: #424242;
    margin: 0 auto;
    margin-top: 10px;
    display: block;
    text-align: center;
    box-sizing: border-box;
}
.about>span:nth-child(3){
    height: 5px;
    width: 3%;
    background: #424242;
    display: block;
    margin: 0 auto;
    margin-top: 10px;
    text-align: center;
    box-sizing: border-box;
    font-size: 100%;
}
.about_bottom{
    position: relative;
    min-height: 1px;
    padding-right: 15px;
    padding-left: 15px;
    text-align: center;
    box-sizing: border-box;
    margin-top: 50px;
}
.about_bottom>div:nth-child(1){
    position: absolute;
    left: 90px;
    width: 390px;
    height: 235px;
}
.about_bottom>div:nth-child(2){
    position: absolute;
    left: 480px;
    width: 390px;
    height: 235px;

}
.about_bottom>div:nth-child(3){
    position: absolute;
    left: 870px;
    width: 390px;
    height: 235px;

}
.about_bottom>div>h3>a{
    color: #424242;
    font-size: 0.95em;
    text-decoration: none;
    font-weight: 600;

    box-sizing: border-box;
}
.about_bottom>div>h3{
    margin-top: 9px;
}
.about_bottom>div>h3>a:hover{
    transition: 0.5s all;
    color: darkred;
}

.about_bottom>div>p{
    margin-top: 9px;
    margin-left: 50px;
    color: #424242;
    font-size: 0.85em;
    line-height: 1.5em;
    width: 79%;
    text-align: left    ;
    display: block;
    text-indent:2em
}
/*middle_about2的CSS**********************************************************************/
.middle_about2{
    position: relative;
    margin-top: 300px;
    background: #f3f3f3;
    padding: 5em 0 2em;

}
.about>h3:first-child{
    margin-top: -12px;
}

/*list1 的图片效果CSS**********************************************************************/

.text-desc{
    position: absolute;
    left: 0;
    top: 0;
    background: #f3f3f3;
    transform: scale(0.1);
    height:150px;
    opacity: 0;
    width:250px;
    padding: 40px 120px 20px 20px;
    transition: 0.6s;
}
/*list2 出现问题的重写系列CSS**/
.text-desc2{
    background: #f3f3f3;
    transform: scale(0.1);
    transition: 0.6s;
    opacity: 0;
   position: absolute;
    top:50px;
    text-align: left;
    margin-left: 60px;

}

.text-desc>h3{
    font-size: 20px;
    font-weight: bold;
    color: #666;
    text-align: center;
    margin-top: -30px;
}
.text-desc>p{
    font-weight: 300;
    font-size: 14px;
    padding: 0;
    color: #666;

}
.text-desc2>h3{
    font-size: 20px;
    font-weight: bold;
    color: #666;
    text-align: center;
    margin-top: -30px;
}
.text-desc2>p{
    font-weight: 300;
    font-size: 14px;
    padding: 0;
    color: #666;

}

.port-6 img{
    transition: 0.6s;
    z-index: 1;
    cursor: pointer;
}
.port-6:hover img{
    transform: scale(0.35) translateY(70%);
    position: relative; z-index: 9;
}
.port-6:hover .text-desc{
    transform: translateX(0px);
    opacity: 1;
}
.port-6:hover .text-desc2{
    transform: translateX(0px);
    opacity: 1;
}


/*list1的图片效果CSS**********************************************************************/
.list1{
    margin-top: 30px;
    margin-left: 90px;
    position: relative;
    box-shadow: 0 0 5px #aaa;
    width: 1140px;
    overflow: hidden;
}
.list1>div:nth-child(2){
    width: 98px;
    height: 92px;
    background: red;
    border: 2px solid white;
    position: absolute;
    left: 334px;
    top:75px;
    z-index: 10;
    border-radius: 5px;
}
.list1>div:nth-child(2)>p:first-child{
   margin-top: 0px;
    margin-left: 32px;
    font-weight: bold;
    font-size: 3em;
    color: #FFF;
 }
.list1>div:nth-child(2)>p:last-child{
    margin-top: -10px;
    margin-left: 30px;
    font-weight: bold;
    font-size: 1em;
    color: #FFF;
}
.list1>div:nth-child(3){
    position: absolute;
    left:383px;
    top:0px;
    margin-left: 0px;
    height: 242px;
    width: 757px;
    background: #FFFFFF;
}
.list1>div:nth-child(3)>h3>a{
    color: #424242;
    text-decoration: none;
    font-size: 0.85em;
    font-weight: 600;
    margin-left: 100px;
    display: block;;
    margin-top: 50px;
}
.list1>div:nth-child(3)>p{
    margin-left: 100px;
    margin-top: 7px;
    font-size: 0.85em;
    color: #1E1E1E;
    line-height: 1.8em;
    box-sizing: border-box;

}
.list1>div:nth-child(3)>h3>a:hover{
    transition: 0.5s all;
    color: darkred;
}
/*list2**********************************************************/
.list2{
    margin-top: 30px;
    margin-left: 90px;
    position: relative;
    box-shadow: 0 0 5px #aaa;
    width: 1140px;
}

.list2>div:first-child{
    margin-left: 757px;
}
.list2>div:nth-child(2){
    width: 98px;
    height: 92px;
    background: red;
    border: 2px solid white;
    position: absolute;
    left: 706px;
    top:75px;
    z-index: 10;
    border-radius: 5px;
}
.list2>div:nth-child(2)>p:first-child{
    margin-top: 0px;
    margin-left: 32px;
    font-weight: bold;
    font-size: 3em;
    color: #FFF;
}
.list2>div:nth-child(2)>p:last-child{
    margin-top: -10px;
    margin-left: 30px;
    font-weight: bold;
    font-size: 1em;
    color: #FFF;
}
.list2>div:nth-child(3){
    position: absolute;
    left:0px;
    top:0px;
    margin-left: 0px;
    height: 242px;
    width: 757px;
    background: #FFFFFF;
}
.list2>div:nth-child(3)>h3>a{
    color: #424242;
    text-decoration: none;
    font-size: 0.85em;
    font-weight: 600;
    margin-left: 100px;
    display: block;;
    margin-top: 50px;
}
.list2>div:nth-child(3)>p{
    margin-left: 100px;
    margin-top: 7px;
    font-size: 0.85em;
    color: #1E1E1E;
    line-height: 1.8em;
    box-sizing: border-box;

}
.list2>div:nth-child(3)>h3>a:hover{
    transition: 0.5s all;
    color: darkred;
}
/*footer*********************************************************************/
.middle_about3{
    position: relative;
    margin-top: 20px;
    background:rgba(60,188,141,0.8);
    padding: 5em 0 2em;
    display: block;
}
.about3>h3:first-child{
    font-size: 2em;
    color:#FFFFFF;
}
.about3>p:nth-child(2){
    color:#FFFFFF;
}
.about3>span:nth-child(3){
    background-color: #FFFFFF;
    margin-bottom: 40px;
}
.footer_img{
    display: flex;
}
/*img1部分**********************/
.img_one {
    width:20%;
    height:100%;
    overflow:hidden;/*隐藏放大时溢出部分*/
    position:relative;
    text-align:center;
    cursor:pointer;
    margin-left: 130px;
}

.img_one .overlay {
    width:100%;
    height:100%;
    position:absolute;
    overflow:hidden;
    top:0;
    left:0;
    opacity:0;
    background-color:rgba(0,0,0,0.5);
    transition:all .4s linear;
}

.img_one img {
    transition:all .4s linear;
}
.img_one h2 {
    color:#fff;
    text-align:center;
    position:relative;
    font-size:17px;
    background:rgba(0,0,0,0.6);
    transform:translatey(-100px);/*文本从上面*/
    transition:all .2s ease-in-out;
    padding:10px;
}

.img_one a.info {
    text-decoration:none;
    display:inline-block;
    color:#fff;
    border:1px solid #fff;
    background-color:transparent;
    opacity:0;
    filter:alpha(opacity=0);
    transition:all .2s ease-in-out;
    margin:50px 0 0;
    padding:7px 14px;
}

.img_one a.info:hover {
    box-shadow:0 0 5px #fff;
}

.img_one:hover img {
    transform:scale(1.2); /*放大图片*/
}

.img_one:hover .overlay {
    opacity:1;
}

.img_one:hover h2,.img_one:hover a.info {
    opacity:1;
    transform:translatey(0);
}

.img_one:hover a.info {
    /*延迟0.2*/
    transition-delay:.2s;
}
/*img2部分**********************/
.img_two {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_two .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,0.6);
    opacity: 0;
    filter: alpha(opacity=0);
    transform: translate(460px, -100px) rotate(180deg);
    transition: all 0.2s 0.4s linear;
}

.img_two img {
    display: block;
    position: relative;
    transition: all 0.2s linear;
}

.img_two h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
}

.img_two a.info {
    display: inline-block;
    text-decoration: none;
    padding: 7px 14px;
    color: #fff;
    border: 1px solid #fff;
    margin-top: 50px;
    background-color: transparent;
    transform: translateY(-200px);
    transition: all 0.2s linear;
}

.img_two a.info:hover {
    box-shadow: 0 0 5px #fff;
}

.img_two:hover .overlay {
    opacity: 1;
    transition-delay: 0s;
    transform: translate(0px, 0px);
}

.img_two:hover h2 {
    transform: translateY(0px);
    transition-delay: 0.5s;
}

.img_two:hover a.info {
    transform: translateY(0px);
    transition-delay: 0.3s;
}
/*img3部分**********************/
.img_three {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
    background: linear-gradient(45deg, #ff89e9 0%,#05abe0 100%);
}

.img_three .overlay {
    width: 65%;
    height: 50%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    padding: 3em;
    text-align: left;
}

.img_three img {
    display: block;
    position: relative;
    max-width: none;
    transition: opacity 0.35s, transform 0.45s;
    transform: translate3d(-26px,0,0);
}

.img_three h2 {
    color: #fff;
    position: relative;
    font-size: 17px;
    background-color: transparent;
    padding: 15% 0 10px 0;
    text-align: left;
}

.img_three .overlay:before {
    position: absolute;
    top: 20px;
    right: 20px;
    bottom: 20px;
    left: 20px;
    border: 1px solid #fff;
    content: '';
    opacity: 0;
    transition: all 0.35s, transform 0.45s;
    transform: translate3d(-20px,0,0);
}

.img_three a, .img_three p {
    color: #FFF;
    opacity: 0;
    transition: all 0.35s, transform 0.45s;
    transform: translate3d(-10px,0,0);
}

.img_three:hover img {
    opacity: 0.6;
    transform: translate3d(0,0,0);
}

.img_three:hover .overlay:before, .img_three:hover a, .img_three:hover p {
    opacity: 1;
    transform: translate3d(0,0,0);
}
/*img4部分******************************************/
.img_four {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_four .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
}

.img_four img {
    display: block;
    position: relative;
    transition: all 0.4s linear;
}

.img_four:hover img {
    filter: grayscale(1) blur(3px); /*灰度模糊*/
    transform: scale(1.2);
}

.img_four h2 {
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
}

.img_four a.info {
    display: inline-block;
    text-decoration: none;
    padding: 7px 14px;
    border: 1px solid #fff;
    margin-top: 50px;
    background-color: transparent;
}

.img_four a.info:hover {
    box-shadow: 0 0 5px #fff;
}

.img_four a.info, .img_four h2 {
    transform: scale(0.7);
    transition: all 0.4s linear;
    opacity: 0;
    color: #fff;
}

.img_four:hover a.info, .img_four:hover h2 {
    opacity: 1;
    transform: scale(1);
}
/*img5部分******************************************/
.img_five {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
    margin-left:130px;
}

.img_five .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    background-color: rgba(75,75,75,0.1);
    transition: all 0.4s  linear;
}

.img_five:hover .overlay {
    background-color: rgba(48, 152, 157, 0.4);
}

.img_five img {
    display: block;
    position: relative;
}

.img_five h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
    margin-top: 45px;
    transition: all 0.4s  cubic-bezier(0.88,-0.99, 0, 1.81);/*跳的效果*/
}

.img_five:hover h2 {
    margin-top: 5px;
}

.img_five a.info {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    border: 1px solid #fff;
    background-color: transparent;
    opacity: 0;
    transform: scale(0);
    transition: all 0.4s  cubic-bezier(0.88,-0.99, 0, 1.81);
    font-weight: normal;
    margin: -52px 0 0 0;
    padding: 62px 100px;
}

.img_five:hover a.info {
    opacity: 1;
    transform: scale(1);
}

.img_five a.info:hover {
    box-shadow: 0 0 5px #fff;
}
/*img6部分******************************************/
.img_six {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_six .overlay {
    position: absolute;
    overflow: hidden;
    opacity: 0;
    width: 55%;
    height: 81%;
    left: 22%;
    top: 10%;
    border-radius: 80%;
    border: 2px solid #FFF;
    transition: opacity 0.35s, transform 0.35s;
    transform: translate3d(50%,50%,0);
}

.img_six:hover .overlay {
    background-color: rgba(0,0,0,0.3);
}

.img_six img {
    display: block;
    position: relative;
    transition: all 0.35s;
}

.img_six:hover img {
    filter: brightness(1.4);
}

.img_six h2 {
    text-align: center;
    position: relative;
    font-size: 17px;
    color: #FFF;
    padding: 1em 0;
    opacity: 0;
    transition: opacity 0.35s, transform 0.35s;
}

.img_six a, .img_six p {
    color: #FFF;
    padding: 1em 0;
    opacity: 0;
    transition: opacity 0.35s, transform 0.35s;
}

.img_six:hover a, .img_six:hover p, .img_six:hover h2, .img_six:hover .overlay {
    opacity: 1;
    transform: translate3d(0,0,0);
}
/*img7部分******************************************/
.img_seven {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_seven .overlay {
    position: absolute;
    overflow: hidden;
    width: 80%;
    height: 80%;
    left: 10%;
    top: 10%;
    border-bottom: 1px solid #FFF;
    border-top: 1px solid #FFF;
    transition: opacity 0.35s, transform 0.35s;
    transform: scale(0,1);
}

.img_seven:hover .overlay {
    opacity: 1;
    transform: scale(1);
}

.img_seven img {
    display: block;
    position: relative;
    transition: all 0.35s;
}

.img_seven:hover img {
    filter: brightness(0.6);
}

.img_seven h2 {
    text-align: center;
    position: relative;
    font-size: 17px;
    background-color: transparent;
    color: #FFF;
    padding: 1em 0;
    opacity: 0;
    transition: all 0.35s, transform 0.35s;
    transform: translate3d(0,-100%,0);
}

.img_seven a, .img_seven p {
    color: #FFF;
    padding: 1em 0;
    opacity: 0;
    transition: all 0.35s, transform 0.35s;
    transform: translate3d(0,100%,0);
}

.img_seven:hover a, .img_seven:hover p, .img_seven:hover h2 {
    opacity: 1;
    transform: translate3d(0,0,0);
}
/*img8部分******************************************/
.img_eight {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: default;
}

.img_eight .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    left: 0;
    background-color: rgba(255, 255, 255, 0.7);
    top: -200px;
    opacity: 0;
    filter: alpha(opacity=0);
    transition: all 0.1s linear 0.5s;
}

.img_eight:hover .overlay {
    opacity: 1;
    top: 0px;
    transition-delay: 0s;
}

.img_eight img {
    display: block;
    position: relative;
}

.img_eight h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
    transform: translateY(-200px);
    transition: all ease-in-out 0.1s;
    transition-delay: 0.3s;
}

.img_eight:hover h2 {
    transform: translateY(0px);
    transition-delay: 0.3s;
}

.img_eight a.info {
    display: inline-block;
    text-decoration: none;
    padding: 7px 14px;
    margin: 50px 0 0 0;
    background-color: transparent;
    transform: translateY(-200px);
    color: #000;
    border: 1px solid #000;
    transition: all linear 0.3s;
}

.img_eight a.info:hover {
    box-shadow: 0 0 5px #fff;
}

.img_eight:hover a.info {
    transform: translateY(0px);
    box-shadow: 0 0 5px #000;
    color: #000;
    border: 1px solid #000;
    transition-delay: 0.3s;
}
/*img9部分******************************************/
.img_nine {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
    margin-left: 130px;
}

.img_nine .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    opacity: 0;
    background-color: rgba(0,0,0,0.5);
    transition: all 0.4s cubic-bezier(0.88,-0.99, 0, 1.81);
}

.img_nine img {
    display: block;
    position: relative;
    transition: all 0.4s cubic-bezier(0.88,-0.99, 0, 1.81);
}

.img_nine h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    background: rgba(0,0,0,0.6);
    transform: translatey(-100px);
    transition: all 0.4s cubic-bezier(0.88,-0.99, 0, 1.81);
    padding: 10px;
}

.img_nine a.info {
    text-decoration: none;
    display: inline-block;
    color: #fff;
    border: 1px solid #fff;
    background-color: transparent;
    opacity: 0;
    transition: all 0.4s linear;
    margin: 50px 0 0;
    padding: 7px 14px;
}

.img_nine a.info:hover {
    box-shadow: 0 0 5px #fff;
}

.img_nine:hover img {
    transform: scale(1.2);
}

.img_nine:hover .overlay {
    opacity: 1;
}

.img_nine:hover h2,.img_nine:hover a.info {
    opacity: 1;
    transform: translatey(0);
}

.img_nine:hover a.info {
    transition-delay: 0.2s;
}
/*img10部分******************************************/
.img_ten {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
    background: #42b078;
}

.img_ten .overlay {
    width: 85%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    padding: 50px 20px;
}

.img_ten img {
    display: block;
    position: relative;
    transition: opacity 0.35s, transform 0.35s;
    transform: translate3d(-10px,0,0);
    backface-visibility: hidden;
}

.img_ten:hover img {
    opacity: 0.4;
    transform: translate3d(0,0,0);
}

.img_ten h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    overflow: hidden;
    padding: 0.5em 0;
    background-color: transparent;
}

.img_ten h2:after {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #fff;
    content: '';
    transition: transform 0.35s;
    transform: translate3d(-100%,0,0);
}

.img_ten:hover h2:after {
    transform: translate3d(0,0,0);
}

.img_ten a, .img_ten p {
    color: #FFF;
    opacity: 0;
    transition: opacity 0.35s, transform 0.35s;
    transform: translate3d(100%,0,0);
}

.img_ten:hover a, .img_ten:hover p {
    opacity: 1;
    transform: translate3d(0,0,0);
}
/*img11部分******************************************/
.img_eleven {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_eleven .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    background-color: rgba(75,75,75,0.7);
    transition: all 0.4s ease-in-out;
}

.img_eleven:hover .overlay {
    background-color: rgba(48, 152, 157, 0.4);
}

.img_eleven img {
    display: block;
    position: relative;
}

.img_eleven h2 {
    text-transform: uppercase;
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
    transform: translateY(45px);
    transition: all 0.4s linear;
}

.img_eleven:hover h2 {
    transform: translateY(5px);
}

.img_eleven a.info {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    border: 1px solid #fff;
    background-color: transparent;
    opacity: 0;
    transform: scale(0);
    transition: all 0.4s linear;
    font-weight: normal;
    margin: -52px 0 0 0;
    padding: 62px 100px;
}

.img_eleven:hover a.info {
    opacity: 1;
    transform: scale(1);
}

.img_eleven a.info:hover {
    box-shadow: 0 0 5px #fff;
}
/*img12部分******************************************/
.img_twelve {
    width: 20%;
    height: 100%;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.img_twelve .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    transition: all 0.4s linear;
}

.img_twelve:hover .overlay {
    background-color: rgba(170,170,170,0.4);
}

.img_twelve h2, .hovereffect img {
    transition: all 0.4s linear;
}

.img_twelve img {
    display: block;
    position: relative;
    transform: scale(1.1);
}

.img_twelve:hover img {
    transform: scale(1);
}

.img_twelve h2 {
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.6);
}

.img_twelve a.info {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    border: 1px solid #fff;
    margin: 50px 0 0 0;
    background-color: transparent;
    opacity: 0;
    transform: scale(1.5);
    transition: all 0.4s linear;
    font-weight: normal;
    height: 20%;
    width: 40%;
    position: absolute;
    top: -20%;
    left: 3%;
    bottom: 3%;
    padding: 70px;
}

.img_twelve:hover a.info {
    opacity: 1;
    transform: scale(1);
    background-color: rgba(0,0,0,0.4);
}
/*滚动部分的css***********************************************************/
#lift{
    margin-top: 25px;
    display: none;
    position: fixed;
    z-index: 100;
    left: 10px;
    top:100px;
    border-radius: 150px;
}
.lift_list{
    display: block;
    list-style:none
}
.lift_item {
    width: 55px;
    height: 55px;
    border-top: 1px solid #b1aaaa;
    border-radius: 50px;
    transition: background-color .1s;
    transition:all .3s linear;
    background-color: rgba(57,139,255,0.85);
}

.lift_item:hover,.hover {
    position: relative;
    margin-bottom: -1px;
    background:#1abc9c;
}
.lift_btn {
    overflow: hidden;
    display: block;
    width: 34px;
    padding: 10px 5px;
    line-height: 20px;
    text-align: center;
    color: #fefefe;
    transition: color .1s;
    margin-left: 4px;
    margin-top:-4px;
}